Question about Sharp 27H-S60 TV

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Screen problem My TV runs great for 15-30 minutes, then goes blank wih horizontal black bars at top and bottom and a white flashing bar at the center. No sound and it does not respond to changing channel button being pushed. Turn it off for 5 minutes and it comes back to normal for another 15 - 30 minutes, then does it again. HELP???

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Re: screen problem

This may be a problem of a loose component, looking through the main board and soldering loose components, IC, transistor, all components, just have patience, this may solve the problem.

Posted on May 15, 2007

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How do I fix a Sony TV that starts then screen goes blank

Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
Type in the brand name of your device, in the search box [at the top right] of the display window and the Search will start at once as you type in, and will show you all the related posts. It will make surf easy.

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You have some bad grounds on the Vertical IC. In addition to this, in the immediate area of this Vertical IC, are a few bad capacitors. Look for this IC mounted on a large heatsink. It may have seven pins . I cannot remember for sure. I have not worked on this particular TV, so I cannot give you specific locations. But I assure the problem is in this area! If you have some electrical experience you can pull this board out. In this case only the caps need replaced and the IC resoldered. Good Luck and thank you for asking. If you have anymore questions, visit me...Thanks Again! Your south of the border tech!

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Your model has a maximum resolution of 720p. What you might want to do is make sure that both your cable/sat box and game stations are outputting at no more than 720 resolution. It's easy to assume that all HDTVs may accept a higher signal, and while they might, some of the scene changes or handshakes may make that operation cause the symptoms you describe.

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1 Answer

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